Improvement in elevators



GUSTAVUS (i. TIMPE, 0F NEW ORLEANS, LOUISIANA.

Letters Paterno. 109,275, dared Ndvmber 15, 1870.

- Y IMPROVEMENT IN ELEVATORS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern.

Bel it known that I, GUsTAvUs C. Turris, ot New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and useful Improven'ient in Elevators; and I do hereby declare that the following is 'a full, clear, and exact description thereof, which willenable others skilled in the art to malte and use the same, reference being had to the accompanying drawing forming part of this specification.

his invention relates to impn'iveinents in apparatus for working oleratonplatibrnis; and s It consists in the application of a inriancc-wheel for regulating the motion,l in sach a way that it may be readily nngeared when the platforn'i is to he let down, the said nngcaring being dono by the brake-operating apparatus.

rhe "rention also comprises an improved arrangement of different-iai gears and shifting devices therefor, for rarynig the connection according to the weight of the loa-ii. A

It aise consists in certain improved arranigenienis of checking apparatus, for arresting the platform in case the hoisting-rope breaks or becomes detached; and

It also consists in an improved arrangement oi' the toothed ways, on which thc, platform works, and the iiictioii-iollei's of thc said platforms.

Figure l is a front elevation, partly sectioned, of my improved arrangements of opcratinggear for working the elevator-piatlorm, and a Figure 2 is a section of the same on the line at' af of fig. l.

Similar letters of reference indicate corrcspondine,- paris.

A is the platform;

B, the ways or guides along which it/works;

U, the suspending-rope; and

D the drum for winding the rope.

The drnni l) is provided with a spur-wheel, l'), by which it is geared with the shaft'l ofthe hoist-wheel G, cithcr by'the pinion H on said shaft, or bythe counter-shaft I, pinion K, wheel L, and pinion M, the pinion H being used when the load is light, and ,thc counter-shaft and 'pinions K M and wheel L when the load ,is heavy,- and greater leverage is required to work it. Y

For shifting the connection from one to the other of these different gears, the pinion 'H is arranged to slide ou the shaft F, and the shaft i is arranged tov slide in its bearings endwisc; the pinion is connected to a sliding collar, t), on shaft F, which is connected by the lever P with a grooved collar, Q, on shaft I, said lever being pivoted to a support at l, and provided with a shifting-bar or handle, S, which may have cords ,l attached, and extending over sui-table guide-pulleys to the floors below, by which the lever P can bc moved either' way to discngagcy one set of gears and engage the other, when required.

ihe hoist-wheel is provided with a inalte-rirn, U, toothed on the inner face, in which a pinion, V, on the fiyfwheol shaft 'W gears, to torn the iiy-wheel X at a rapid rate at the time the platform is being hoisted, to continue the motion by momentum while the power is not applied to the hoist-rope, in the upward movement of the hands of the operator between the times of letting go and taking hold again.

As this wheel would interfere to a considerable extent with the' downward movement of' the platform, I have arranged it to bc ungearedwith' the hoisowheol through the medium of the brake-actuating or checkrope, the said arrangement being as follows:

The bearing y for the shaft is arranged in asnpport, s, so that it may be raised sniiieiently above the position it occupies when the pinion V is gearing with the toothed rim U to disconnect the two; and, to raise it, a hooked projection, a, is attached 'to it, and arranged to hook over a smooth part of the topof the cani-shaped ratchet-bar b, attached at one end Ito the arm d, projecting froi'n one end of tho brake-iever o, and at the other end to the free end ot the said brakclever, as shown, so that, when the brake-lever is drawn downward by the operating-cord f, hanging from iis free ond, to force the brake-strap g down npon the brake-wheel h, the high part of bar l1 will be forced under the hoolt a, and draw the end of shaft .V, with the pinion on it, up out of gear with thc rim U.

A weighted holding-pawl, i, is so`coinbincd with this ratchct-barl1as to engage it at any position it xnaybe drawn into, and hold the brake on the wheel until tripped by the cord 1:.

l propose to form the teeth l of the ways B, il which the locking-pinions in work, Aby casting the notches between them in the rails, so that the points will be flush with the side, or, at least, so as not to project beyond, so that the tooth joining the metal on cachend will be greatly si rengthened thereby, and be less liable to break in the crent of the breaking of the rope., and the sudden locking of thc pinions in; also, for providing a smooth front face for the long frictionrollers al, which 1 place on the piaifrn'm io lossen the friction.

l. also propose to place the friction-rollers o? in the flanges of the vertical rails ofthe platform.

For locking these pinions, in addition to the ordinary spring-actuated locking-pawls n, I provide them with ratchet-hubs, as shown in dotted -lincs in iig. 1, in thc teeth or" which pawls p, connected to the disk q, will be caused to engage, by the weighted arm o',

pivoted on the cross-head of the platform, and carrying the said disk, when the saidlever is turned to the side of the center, in which it is shown in the drawing; but, when the said lever is turned the other way, the pawls will beheld ont of connection with the said toothed hubs, which must be t-he case when the platform is to be moved down, and which will also generally be the case when the loads being raised are light, the pawls and weight being intended for heavy hoist-lngv mainly, to keep the' hack strain olf the men while hoisting, or, in case they lshould let the rope go, it also relieves lthe hoisting-rope to some extent ofthe strain. Y

It will be seen that my arrangement of the fly-wheel with the hoist-wheel answers nearly all the purposes ota counter-balanee`weight in hoisting the platform,

while it has the advantage that the platform may be' caused to more downward by gravity, (the balancewheel being ungeared,) while it is necessary7 when a counter-balance is used, to draw the platform down, or load it, so that it will overcome the weight.

Having thus described my invention, I claim asinew and desire to secure by Letters Patent 1. The combination, wit-h the hoist-wheel drum and platform of an elevator, of a fly-wheel, arranged to be disconnected by the eheelerope and brake-lever, substantially as specified.

2. The combination, with the brake-lever, of the ratchet-bar I), weighted pa-Wl i, and trip-cord k, substantially as specified.

3. 'lhe combination, with the gear-wheel'E, vof the drum-shaft and the hoistwheel shaft of the sliding pinion H, sliding shaft I, wheel L, pinions K and M, and the shiftingdever P, all substantially as specified.

4. The teeth l, arranged within the faces of the ways 15, and the platform-frame, provided -witll the rollers al, working across the faces of the said Ways, all substantially as specified.

5. The combination, with the platform and the pinions my, having the toothed hubs described, of the locking-pawls 11 and weighted levers e, substantially as specified. v

GUSTAVUS IC. TIMPE.

Witnesses:

J. G. BUNJENN, GID. L. 'FoLGEa 

